Sprinkler head modification



Oct. 16, 1951 J. J. ROBBINS SPRINKLER HEAD MODIFICATION 2 Sl-lEETS-SI-IEET 1 Filed Sept. 20, 1946 grwmtoo Jesse Jeolwe Oct. 16, 1951 J. J. ROBBlNS SPRINKLER HEAD MODIFICATION 2"'SHEETS--SHEET 2 Filed Sept. 20, 1946 Patented Oct. 16, 1951 UNITED- PATENT OFFICE em 1 fii izm tress-amt:

Jesse I; militias: Glendale, omi, assignor to Stylofe'de Corporation, Glendale, Califl, a. corporation of California Application siiteiiiiir 20, saw 166. 698,145 1 dam; (01. 299-118) My invention relates to sprinkler heads and particularly to improvements therein whereby the area of fluid dispersion or the said sprinkler head niight'b'e regulated. I H D While sprinkler heads'in general, and" sprinkler heads of the general pop-up type, comprising a sprinkling valve adapted adapted on the apprication of fluid pressure to raise abovethe ground and disperse fluid upon the" surrounding area" are not new, no simple yet inexpensive effective means has yet been" found whereby the area of fluid dispersed about the sprinkler hadi'riight easily bevaried.

It is th principal object; r my in ention to provide means insertable in" a} sprinkler head enabling the operator to e'fic'tively vary the area of fluid dispers'i'o'n according to the area desired to be sprinkled. Q

It is my further object to provide a dispersion varying member, the insertion of which in a fluid sprinkler enables the operator to achieve a dispersing of fluid-j over either of two desired areas,

depending upon the manner of insertion, and

which when removed from the sprinkler head allows'a full 360 dispersion. j

.It is another of my objects to providejjsuch ispe s n va mb r. i. d r ye tremely'inexpensive construction and adaptedfor insertion in a sprinkler head with a minimum of inconvenience.

Again it is my object to provide a sprinkler head adapted for receiving the aforesaid dispersion varying member and adapted to cooperate therewith in the dispersion of fluid over varying areas.

Other objects and advantages of my invention will be apparent from the following description of the preferred embodiments thereof. While the aid following description shows my dispersion varying means in a sprinkler head of the pop-up type, it is easily adaptable for sprinkler heads of other types and varieties.

In the drawings:

Figure 1 shows in section a sprinkler head incorporating my invention.

Figure 2 shows a cross-sectional view of such sprinkler head taken along the line 22 of Figure 1.

Figure 3 shows a bottom plan view of my dispersion varying means.

Figure 4 shows a top plan view thereof.

Figure 5 shows a sectional view of my dispersion varying means taken on the line 5-5 of Figure 4.

Figure 6 shows in top plan a sprinkler system Z .1 estimating my invention in its various mane festations. j V g Figure 7 spowsan elevational View of a secuh are. sprinkler systern p'ipe having mounted thereon oneof my sprinkler heads I A Figure 3 shows a perspective view of my dispersion varying member. 7

Figure 9 shows a perspective view of my ei ig opt drawings, at? 2, wa ch are adaptable forthrea'ding on pipe ex; In 6 comprising part of a sprink1ing sys te Slidable inthebore It: oi the: nut 21 is: a

, Wl armwbflJL. a d t lar jm r 12*. h s hann e d a 4i :whi hr dgs an. xtr on l5 .Q th i 2'. Th t bi grm m. .I fr. [18 with Which e b g we fi siiaza .28 and. 129 l ad g .ifiereir m and. ur a amber w @qm r or h ei e 9i. t I a d tub la mem e .1 1, ,TPT t e ti gs-1 h t l m mbe 2 n. wid n. t e u ia g oo e-3. r vide nthe pu germ 1561112; and receives a split annular rmgflaa I -Adap e tob rec v d in h ars d bQr T32 ih 1t u rmem rla' jtof se 11 he. nqmaer 8' hg oi. the. dispe si n. we e; membg' i0-..The.s pe r 0 varyin me be ,9, comprises a" tube, the lower end 42" thereof adapted to seat on the shoulder 38 and the upper end 44 thereof abutting the tapering side of cap 20, or vice versa. To provide egress for water passing through the sprinkling system 8 through the pipe 6 and into the sprinkler head are cutaway portions of the dispersion varying members 45 and 48. These cutaway portions 46 and 48 are formed by cutting along lines drawn from the points 58 or 60, around the periphery of the said tube at one side, and terminating in out-swept curves 59 and 52 or 54 and. 55, respectively, at either extremity, the said curves intersecting the end edges of the said dispersion varying member. If desired, the ling of cut may be tapered as shown in Figure 5 from the lowermost points 58 and 60 of the cutaway portions 46 and 48 outwardly towards the ends of the said dispersion varying member until terminated by the respective curves. Thus is formed in essence a tube somewhat biased at its ends, if desired, and having upraised annular segments 62 and 64 at either end for the purpose of directing the fiow of fluid.

In operation where a full 360 area of fluid dispersion is desired, the dispersion varying member 40 is merely left out, and the fluid passes out of 2,571,763 1 c T r I the orifices 24, 26, 28 and 29 into the chamber 30 biasing outwardly against the tapered side of the cap 20 and distributing as at 66. Of course, as is well known, the particular type of sprinkler head shown, that is, the pop-up type, will slide upwardly in the nut 2 to the position shown in Figure 1 as a result of the pressure of the fluid entering the tubular member l2. Where it is desired to restrict the area of dispersion, the cap 20 is unthreaded from the tubular member 52 and the dispersion varying member 40 slid into the bore 32 and seated upon the seat 38 after which the cap 20 is replaced and threaded down until its tapering side abuts against the ends of the dispersion varying member. This directs the flow of water through either of the cutaway portions. As shown in Figure 5, in which the upraised annular segment 62 extends further about the periphery of the dispersion varying member 40 than does the upraised annular segment 64, the area of dispersion of the sprinkler head will depend upon whether the end 44 is uppermost within the sprinkler head or whether the end 42 is uppermost. Furthermore, the area of dispersion will be determined originally by the amount of the cuts 46 and 48. The more extensive annular segment remaining, th less extensive the area of dispersion.

For example, in order to achieve a 90 area of dispersion as shown at and a 180 area of dispersion as shown at 12, both being particularly desired for lawn sprinkling purposes, I have constructed my dispersion varying member with the annular segment 62 comprising 137 of the periphery of the dispersion varying member 40 for 90 and the annular segment 54 comprising 69 of the periphery of the said dispersion varying member for 180. In addition, I have biased the cuts 46 and 48 6 and the curves 50, 52, 54 and 56 are of -inch radius. The longitudinal distance between the point 60 and the end 42 is .078 inch, and the longitudinal distance between the point 58 and the'end 44 is the same. In a dispersion varying member the length of which between ends 42 and 44 is .437 inch and the inside diameter of which is .421 inch, such configuration has enabled me to contrive a sprinkler head adaptable for distributing fluid about 360, 180 or 90, depending upon whether the dispersion varying member is left out of the sprinkler head, is placed in same with the end 44 seating on the shoulder 38, Or is placed therein with the end 42 seating on the said shoulder.

While I have described what is at present considered a preferred embodiment of the invention, it will be understood that various changes and modifications may be made therein without departing from the essence of the invention and it is intended to cover all such changes and modifications as come within the true scope and spirit of the appended claim.

I claim:

A sprinkler device comprising, a tube formed with an internal annular shoulder in spaced relation to an end thereof and having an internally threaded portion extending interiorly of said shoulder, a, sleeve slidably mounted within said tube end and supported at one end on said shoulder with its outer end projecting from said tube end, and a plug member having a discshaped head engaged on its under side with said outer sleeve end, said plug member having a hollow shank portion extending from said head and terminating in an enlarged threaded end threadably engaged with said threaded tube portion thereby clamping the opposite ends of said sleeve between said head and said shoulder, said shank being spaced from said sleeve to define an annular discharge passage therebetween and being provided with openings communicating said chamber with said tube interiorly of the last named end of said plug member, said outer sleeve end being cut away to provide a discharge opening at said under side of said head and at one side only of said sleeve.

JESSE J. ROBBINS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 699,801 Martin May 13, 1902 1,881,409 LeMoon Oct. 4, 1932 1,913,278 Ivey June 6, 1933 2,128,552 Rader et a1. Aug. 30, 1938 

